def test_bind_constructor__constructor_required(self):
binder = Binder()
self.assertRaisesRegex(InjectorException, "Constructor cannot be None",
binder.bind_to_constructor, int, None)
def test_bind_constructor(self):
constructor = lambda: 123
binder = Binder()
binder.bind_to_constructor(int, constructor)
assert binder._bindings[int]._constructor is constructor
def test_bind_provider__provider_required(self):
binder = Binder()
self.assertRaisesRegex(InjectorException, "Provider cannot be None",
binder.bind_to_provider, int, None)
def test_bind_provider(self):
provider = lambda: 123
binder = Binder()
binder.bind_to_provider(int, provider)
assert binder._bindings[int] is provider
def test_bind__duplicate_binding(self):
binder = Binder()
binder.bind(int, 123)
self.assertRaisesRegex(InjectorException, "Duplicate binding",
binder.bind, int, 456)
def test_bind__class_required(self):
binder = Binder()
self.assertRaisesRegex(InjectorException, 'Binding key cannot be None',
binder.bind, None, None)
